Exercise algebra.manipulation.exponential.equation
Description
solve exponential equation algebraically
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
5^(2-x) == (5^2)^(-1)
⇒ algebra.manipulation.exponents.mul-exponents5^(2-x) == 5^(-2)
⇒ algebra.manipulation.exponents.equation.same-base2-x == -2
⇒ algebra.equations.coverup.onevar.minus-rightx == 4